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FED-STD-791 Lubricants, Liquid Fuels, And Related Products, Testing Method OfThis test method standard is composed of standard test methods for sampling, inspecting and testing lubricants, liquid fuels and related products. It is issued pursuant to the Federal Property and Administration Services Act of 1949, as amended and its application to the purchase of commodities referred to herein is mandatory on all Federal agencies.

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'�NOTE:This draft dated 15 April 2006' by DasH - Page 456 of 460

FED-STD-791D

5341

Fuel system icing inhibitor in

1. Crushed ice

hydrocarbon fuels (redox method)

2. Ethylene glycol monomethyl

ether (EGME) standard solution

3. Potassium di chromate solution,

standard 0.2000 N

4. Ferroin indicator (1,10

phenanthroline ferrous

complex)

5. Ferrous aluminum sulfate

solution 1.1000N . Asolution of

ferrous ammonium sulfate,

concentrated sulfuric acid,

potassium dichromate, ferroin

indicator, and water

6. Sulfuric acid , concentrated

5414.4

Resistance of grease to fuel

1. Standard test fluid (ASTM D

471, type111)

2. Aluminum strip (ASTM B 209,

tempers T-3 or T04 )

5415.1

Resistance of grease to water and

1. Alcohol, ethyl, specially

a 1:1 water �ethanol solution

denatured, aircraft (A-A-51693)

2. Distilled water

6050.1

Nitrate-type ignition improvers in

1. Saponification mixture 1N. A

diesel fuel

solution of potassium hydroxide

and n-butyl alcohol

2. Diphenylamine (1 percent)

solution. A solution of

diphenylamine (ACS indicator

grade) and sulfuric acid

3. Toluene (ACS Reagent grade)

6052.1

High temperature, high pressure

1. Nitrogen gas

spray ignition

6053.1

Manifold ignition test

1. Steel wool

6508.2

Load carrying capacity of

1. Lubricating oil, SAE J1966

lubricating oils (Ryder gear

2. Flushing solvents: Stoddard

machine)

solvent (MIL-PRF-680B, Type

1 and petroleum ether (O-E-

751)

3. Test gear, FaFnir WO-6

4. o-rings, National No . 622710

5. Shaft seals

6517

High temperature gear load

1. lubricating oil, MIL-PRF-7808,

carrying capacity of lubricating

SAE J1966, grade 1100

oils

Dry cleaning solvent (A-A-

59601D)

455